Synthesis of Isoxazole Derivatives of 4,5-Dihydro-1H-pyrazoleстатья
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Дата последнего поиска статьи во внешних источниках: 9 января 2018 г.
Аннотация:Cyclocondensation of pent-1-en-4-yn-3-one with phenylhydrazine and p-tolylhydrazine occurs at
the positions 1, 3. Proceeding from the 1-aryl-3-ethynyl-4,5-dihydro-1H-pyrazoles formed in the reaction in yields up to 95% we prepared potentially biologically active isoxazole derivatives of pyrazoline. The structure of 5-[1-(4-methylphenyl)-4,5-dihydro-1H-pyrazol-3-yl]-3-phenyl-1,2-oxazole was studied by X-ray diffraction analysis.